Abstract: The present invention relates to a negative electrode active material for a rechargeable battery, a method of preparing the same, and a rechargeable battery including the same, wherein the negative electrode active material for a rechargeable battery includes a crystalline carbon-containing layer surrounding a hollow cavity; a silicon-based oxide contained within the hollow cavity; and an amorphous carbon-containing layer formed on an outer surface of the crystalline carbon-containing layer.

Abstract: Disclosed are negative electrodes for all-solid-state batteries, all-solid-state batteries including the same, and methods of manufacturing negative electrodes for all-solid-state batteries. The negative electrode comprises a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer comprises a negative electrode active material and a solid electrolyte. The negative electrode active material includes a porous support and silicon (Si). The silicon fills at least a portion of a pore of the porous support.

Abstract: A negative electrode active material for a rechargeable lithium battery and a rechargeable lithium battery including the negative electrode active material are provided. The negative electrode active material for a rechargeable lithium battery includes graphite and an amorphous carbon-containing layer surrounding the graphite. The amorphous carbon-containing layer includes a first region and a second region, which have different R values of Equation 1 (R value=ID/IG, where ID and IG are a maximum peak intensity of the D band at a frequency of 1360±50 cm?1 and a maximum peak intensity of the G band at a frequency of 1580±50 cm?1, respectively, obtained by Raman spectroscopy for the negative electrode active material), and the R value of Equation 1 in the first region is 0.5 or less.

Abstract: A negative electrode active material, a negative electrode for a rechargeable lithium battery including the same, and a method for preparing the same are provided. A negative electrode active material includes a carbon-based material, and a surface modifier on a surface of the carbon-based material, where the surface modifier includes a polar functional group, and the polar functional group contains at least one of a carboxyl group, an amine group, a thiol group, and/or a combination thereof.

Abstract: A negative electrode active material includes a core containing a first amorphous carbon and a shell on the core. The shell includes a first shell on the core, with the first shell including a crystalline carbon. The shell also includes a second shell on the first shell, with the second shell including a second amorphous carbon. A ratio of a D/G value of the core to a DIG value of the shell including the first shell and the second shell is about 1.4 to about 15.

Abstract: Disclosed are a negative active material, a method of preparing the negative active material, and a rechargeable lithium battery including the negative active material. The negative active material includes a core comprising a porous support comprising pores, a carbon layer provided in the pores, a silicon layer provided on the carbon layer, and an amorphous carbon layer provided on an outer surface of the core. The pores comprise mesopores that are about 50% to about 100% of a total porosity of the porous support.

Abstract: Disclosed are methods of manufacturing negative electrode active materials, negative electrode active materials manufactured using the same, and rechargeable lithium batteries including the same. The method of manufacturing a negative electrode active material comprises mixing a silicon-iron alloy and a hard carbon raw material together to prepare a first mixture, allowing the first mixture to undergo graphitization at about 1,000° C. to about 1,500° C. to prepare a second mixture, and washing the second mixture with an acid.

Abstract: A negative electrode active material, a method of preparing the same, and rechargeable lithium battery including the same are disclosed, where the negative electrode active material includes a crystalline carbon matrix having a BET specific surface area of less than or equal to about 8 m2/g and a graphitization degree of greater than or equal to about 95%, and silicon dispersed in the crystalline carbon matrix.

Abstract: A negative active material and a rechargeable lithium battery including the same are provided. The negative active material includes a porous amorphous carbon matrix; and a silicon oxide doped with the metal capable of (e.g., for) undergoing (e.g., to undergo) reduction, wherein a porosity of the porous amorphous carbon matrix is about 5% to about 25%.

Abstract: A negative electrode active material, a method of preparing the negative electrode active material, and a rechargeable lithium battery that includes the negative electrode active material, the negative active material includes amorphous nano-sized Si particles and the rechargeable lithium battery includes a negative electrode including the negative electrode active material, a positive electrode and an electrolyte.

Abstract: A negative active material for a rechargeable lithium battery, the negative active material including a porous amorphous carbon matrix having a porosity of about 10% to about 64%, silicon oxide distributed in pores of the porous amorphous carbon matrix, and a coating layer on a surface of the porous carbon matrix, the coating layer including an amorphous carbon.

Abstract: Provides are an anode active material for a lithium secondary battery and a lithium secondary battery comprising same, wherein the anode active material for a lithium secondary battery comprises a silicon-carbon composite having a void in the central portion, the radius of the central portion corresponds to 30% to 50% of the radius of the anode active material for a lithium secondary battery, and the silicon-carbon composite includes silicon nanoparticles and amorphous carbon.

Abstract: Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material includes: a silicon particle core comprising a silicon particle having a particle size in a micrometer range; an oxide layer having a thickness in a range of about 65 nm to about 450 nm, on the silicon particle core; and a conductive layer on the oxide layer.

Abstract: A negative active material for a rechargeable lithium battery, a negative electrode, and a rechargeable lithium battery including the same, the negative active material including a core including silicon nanoparticles and a lithium titanium-based oxide; and an amorphous carbon layer on a surface of the core.

Abstract: Disclosed are a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material includes: a silicon particle core comprising a silicon particle having a particle size in a micrometer range; an oxide layer having a thickness in a range of about 65 nm to about 450 nm, on the silicon particle core; and a conductive layer on the oxide layer.

Abstract: Disclosed is a negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative active material includes: a silicon primary particle core having a particle size of micrometers; a particle layer formed by agglomerating silicon oxide primary particles having a particle size of 10 nm or less on a surface of the core, the particle layer including pores; and a carbon-based material filled in the pores of the particle layer.

Abstract: A negative active material for a rechargeable lithium battery, a method of preparing a negative active material for a rechargeable lithium battery, and a rechargeable lithium battery, the negative active material including a silicon-graphite composite, wherein the silicon-graphite composite includes a graphite particle, a silicon particle inside the graphite particle, and amorphous carbon inside the graphite particle.

Abstract: A negative active material for a rechargeable lithium battery includes a silicon-carbon composite including a core including a crystalline carbon material, a silicon oxide, and a silicon particle and an amorphous carbon-containing coating layer on the surface of the core. An intensity ratio (Si/SiO2) of a Si peak relative to a SiO2 peak ranges from about 2.0 to about 3.0 as measured using an X-ray photoelectron spectroscopy for the negative active material.

Abstract: A negative electrode for a rechargeable lithium battery includes: a current collector; and a negative active material layer on the current collector. The negative active material layer includes a negative active material including a graphite-silicon composite including a graphite particle, a silicon (Si) particle on a surface of the graphite particle, and a carbon coating layer surrounding the graphite particle on the surface of the silicon (Si) particle. A rechargeable lithium battery includes the negative electrode.

Abstract: A carbon negative electrode material for a lithium secondary battery includes: a core carbon material; and a coated layer covering the core carbon material and comprising a carbon coating material and carbon fiber.